| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package com.cloud.hypervisor.kvm.dpdk; |
| |
| import com.cloud.utils.component.AdapterBase; |
| import com.cloud.utils.script.Script; |
| import org.apache.commons.lang3.StringUtils; |
| import org.apache.log4j.Logger; |
| |
| import java.util.Map; |
| |
| public class DpdkDriverImpl extends AdapterBase implements DpdkDriver { |
| static final String DPDK_PORT_PREFIX = "csdpdk-"; |
| |
| private final String dpdkPortVhostUserType = "dpdkvhostuser"; |
| private final String dpdkPortVhostUserClientType = "dpdkvhostuserclient"; |
| |
| private static final Logger s_logger = Logger.getLogger(DpdkDriver.class); |
| |
| public DpdkDriverImpl() { |
| } |
| |
| /** |
| * Get the next DPDK port name to be created |
| */ |
| public String getNextDpdkPort() { |
| int portNumber = getDpdkLatestPortNumberUsed(); |
| return DPDK_PORT_PREFIX + String.valueOf(portNumber + 1); |
| } |
| |
| /** |
| * Get the latest DPDK port number created on a DPDK enabled host |
| */ |
| public int getDpdkLatestPortNumberUsed() { |
| s_logger.debug("Checking the last DPDK port created"); |
| String cmd = "ovs-vsctl show | grep Port | grep " + DPDK_PORT_PREFIX + " | " + |
| "awk '{ print $2 }' | sort -rV | head -1"; |
| String port = Script.runSimpleBashScript(cmd); |
| int portNumber = 0; |
| if (StringUtils.isNotBlank(port)) { |
| String unquotedPort = port.replace("\"", ""); |
| String dpdkPortNumber = unquotedPort.split(DPDK_PORT_PREFIX)[1]; |
| portNumber = Integer.valueOf(dpdkPortNumber); |
| } |
| return portNumber; |
| } |
| |
| /** |
| * Add OVS port (if it does not exist) to bridge with DPDK support |
| */ |
| public void addDpdkPort(String bridgeName, String port, String vlan, DpdkHelper.VHostUserMode vHostUserMode, String dpdkOvsPath) { |
| String type = vHostUserMode == DpdkHelper.VHostUserMode.SERVER ? |
| dpdkPortVhostUserType : |
| dpdkPortVhostUserClientType; |
| |
| StringBuilder stringBuilder = new StringBuilder(); |
| stringBuilder.append(String.format("ovs-vsctl add-port %s %s ", bridgeName, port)); |
| if (Integer.parseInt(vlan) > 0 && Integer.parseInt(vlan) < 4095) { |
| stringBuilder.append(String.format("vlan_mode=access tag=%s ", vlan)); |
| } |
| stringBuilder.append(String.format("-- set Interface %s type=%s", port, type)); |
| |
| if (vHostUserMode == DpdkHelper.VHostUserMode.CLIENT) { |
| stringBuilder.append(String.format(" options:vhost-server-path=%s/%s", |
| dpdkOvsPath, port)); |
| } |
| |
| String cmd = stringBuilder.toString(); |
| s_logger.debug("DPDK property enabled, executing: " + cmd); |
| Script.runSimpleBashScript(cmd); |
| } |
| |
| /** |
| * Since DPDK user client/server mode, retrieve the guest interfaces mode from the DPDK vHost User mode |
| */ |
| public String getGuestInterfacesModeFromDpdkVhostUserMode(DpdkHelper.VHostUserMode dpdKvHostUserMode) { |
| return dpdKvHostUserMode == DpdkHelper.VHostUserMode.CLIENT ? "server" : "client"; |
| } |
| |
| /** |
| * Get DPDK vHost User mode from extra config. If it is not present, server is returned as default |
| */ |
| public DpdkHelper.VHostUserMode getDpdkvHostUserMode(Map<String, String> extraConfig) { |
| return extraConfig.containsKey(DpdkHelper.DPDK_VHOST_USER_MODE) ? |
| DpdkHelper.VHostUserMode.fromValue(extraConfig.get(DpdkHelper.DPDK_VHOST_USER_MODE)) : |
| DpdkHelper.VHostUserMode.SERVER; |
| } |
| |
| /** |
| * Check for additional extra 'dpdk-interface' configurations, return them appended |
| */ |
| public String getExtraDpdkProperties(Map<String, String> extraConfig) { |
| StringBuilder stringBuilder = new StringBuilder(); |
| for (String key : extraConfig.keySet()) { |
| if (key.startsWith(DpdkHelper.DPDK_INTERFACE_PREFIX)) { |
| stringBuilder.append(extraConfig.get(key)); |
| } |
| } |
| return stringBuilder.toString(); |
| } |
| } |